screenrant.com -BY NICHOLAS RAYMOND - Over the years, several Arrow characters have trained Green Arrow (Stephen Amell). Here are all of Oliver Queen's mentors in the Arrowverse.
screenrant.com -BY REBECCA VANACKER - Arrow fan will find out the fate of the Green Arrow and the Canaries spinoff "very soon" according to Arrowverse producer Marc Guggenheim.
screenrant.com - da JOHN ATKINSON- The League of Assassins serve as a recurring presence across all eight seasons of Arrow — here's a breakdown of every established leader of the group.